Inductive rotating transmitter

Abstract

The invention relates to an inductive rotating transmitter, comprising a fixed piece and a rotating piece, whereby the fixed piece and the rotating pierce have a common virtual rotational axis and the rotating piece rotates about the fixed piece. The data transmission is carried out over at least one data transmission path by means of at least one inductive element and the data transmission path is arranged outside the rotational axis of the rotating transmitter.

1. An inductive rotary transducer for transmitting data, comprising:
 a fixed part; 
 a rotating part rotating about the fixed part; 
 a common virtual rotational axis shared by the rotating and fixed parts; and 
 a first and a second inductive element for bidirectional data transmission via at least one data transmission path, the data transmission path arranged outlying the common virtual rotational axis, wherein the first inductive element is configured to transmit data and the second inductive element is configured to receive data, and wherein the first inductive element is arranged adjacent to the second inductive element relative to the virtual rotational axis. 
 
     
     
       2. The inductive rotary transducer according to  claim 1 , further comprising a housing having a duct enclosing the virtual rotational axis. 
     
     
       3. The inductive rotary transducer according to  claim 1 , wherein the inductive element is a transformer comprising at least first and second coils assigned to the fixed respectively rotating part. 
     
     
       4. The inductive rotary transducer according to  claim 3 , wherein the first coil is arranged adjacent to the second coil relative to the virtual rotational axis. 
     
     
       5. The inductive rotary transducer according to  claim 3 , wherein the first coil is arranged coaxially around the second coil. 
     
     
       6. The inductive rotary transducer according to  claim 3 , wherein the first or the second coil is a toroidal coil. 
     
     
       7. The inductive rotary transducer according to  claim 3 , wherein the first or the second coil is a planar coil. 
     
     
       8. The inductive rotary transducer according to  claim 1 , wherein the inductive element comprises a device for concentrating a magnetic field generated by the inductive element. 
     
     
       9. The inductive rotary transducer according to  claim 8 , further comprising a decoupling device arranged between the first and second inductive elements for separating a first magnetic field generated by the first inductive element from a second magnetic field generated by the second inductive element. 
     
     
       10. The inductive rotary transducer according to  claim 1 , wherein the inductive rotary transducer is configured to transmit data according to a bus protocol. 
     
     
       11. The inductive rotary transducer according to  claim 10 , wherein the bus protocol is a Fast Ethernet protocol. 
     
     
       12. The inductive rotary transducer according to  claim 1 , wherein the inductive rotary transducer forms one integrated unit.